INSTALLATION, OPERATION & MAINTENANCE MANUAL ENERGY RECOVERY VENTILATOR

Transcription

1 INSTALLATION, OPETION & MAINTENANE MANUAL ENERGY REOVERY VENTILATOR HE1.5XRT MODEL: HE1.5XRT

2 HE1.5XRT HE1.5XRT INFO TABLE OF ONTENTS HE1.5XRT info Installation Start-up Maintenance Danger of injury if unit starts unexpectedly. Switch power off at service disconnect. Lock-out/ tag-out the disconnect. DANGER OF INJURY OR DAMAGE. The motors in this unit must not be run at an amperage that exceeds the motor s rated full load amps. It is the installer s responsibility to measure the operating amperage of each motor. If the full load amp rating is exceeded, the amp draw must be reduced by reducing airflow with an external damper. Failure to make this adjustment may result in unsafe motor winding temperatures or tripping of the motor thermal protection. 1. Before servicing or cleaning the unit, switch power off at disconnect switch or service panel and lockout/tag-out to prevent power from being switched on accidentally. More than one disconnect switch may be required to de-energize the equipment for servicing. 2. This installation manual shows the suggested installation method. Additional measures may be required by local codes and standards. 3. Installation work and electrical wiring must be done by qualified professional(s) in accordance with all applicable codes, standards and licensing requirements. 4. Any structural alterations necessary for installation must comply with all applicable building, health, and safety code requirements. 5. This unit must be grounded. 6. Danger of severe injury to bystanders and damage to unit or property if high winds move this unit. Secure this unit to the building! 7. Sufficient air is needed for proper combustion IMPORTANT SAFETY INFORMATION RISK OF FIRE, ELETRI SHOK, OR INJURY. OBSE ALL ODES AND THE FOLLOWING: Standard HE1.5XRT with single phase original equipment motors are NOT suitable for use with solid state speed control. Three phase motors are NOT suitable for use with solid state speed control. If speed control is desired use the VFD option. Single phase EM motors are NOT suitable for use with solid state speed control. They already have speed control built into the motor electronics. and exhausting of gases through the flue (chimney) of fuel burning equipment that might be installed in the area affected by this equipment. If this unit is exhausting air from a space in which chimney-vented fuel burning equipment is located, take steps to assure that combustion air supply is not affected. Follow the heating equipment manufacturer s requirements and the combustion air supply requirements of applicable codes and standards. 8. Use the unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer. 9. This unit is intended for general ventilating only. Do not use to exhaust hazardous or explosive materials and vapors. Do not connect this unit to range hoods, fume hoods or collection systems for toxics. 10. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities. Le HE1.5XRT avec moteurs d équipement d origine monophasés ne convient pas pour une utilisation avec regulateur de vitesse electronique. Moteurs de trois phase ne convient pas pour utilisation avec regulateur de vitesse electronique. Si la régulation de vitesse est souhaité, utiliser l option VDF. Moteurs d une phase de l EM ne conviennent pas pour une utilisation avec regulateur de vitesse electronique. Ils ont déjà le contrôle de vitesse intégré dans le moteur électronique. RISK OF INJURY OR DAMAGE. Motor has an automatic reset thermal protector. Disconnect power before servicing or resetting motor thermal protector. Use caution, motor may be hot. The motor must cool before it resets the thermal protector. If the motor thermal protector tripped, correct the issue that caused the motor to overheat (e.g. over motor rated amperage or locked rotor). The unit s fresh air inlet should be at least 10 away from any exhaust, such as dryer vents, chimneys, furnace and water heater exhausts, or other sources of contamination or carbon monoxide. Do not locate the fresh air inlet where vehicles may be serviced or left idling. Never locate the unit inside a structure. Danger of damage or severe injury if high winds move this unit. Secure unit to structure. Observe local code requirements at a minimum. 2 INSTALLATION, OPETION AND MAINTENANE MANUAL

3 HE1.5XRT HE1.5XRT INFO HE1.5XRT ONFIGUTION HART MODEL NUMBER DIGIT NUMBER HE 1. 5 J RT Digit 9: "V", "H", "R", "F" Digit 11: "S" = Single "D" = Double Digit 12: "1" = Single Phase "3" = Three Phase Digit 13: "1" = 115V "4" = 460V "5" = V "9" = 277V Digit 14: Orientation Wall Type Phase "S" = Standard Impellers "E" = E Impellers Digit 15: "S" = Standard Impellers "E" = E Impellers Digit 18: Voltage (see Restriction 1 & 2) Horsepower (see Restriction 3 & 7) Horsepower (see Restriction 3 & 7) Flow ontrol* "-" = No Isolation Dampers (with no Bypass) "D" = Motorized Damper both Airstreams (with no Bypass) "E" = Motorized Damper or Airstream (with no Bypass) "F" = Motorized Damper or OA Airstream (with no Bypass) "S" = Backdraft Damper OA Airstream (with no Bypass) "R" = Backdraft Damper Airstream (with no Bypass) "B" = Backdraft Damper both Airstreams (with no Bypass) "T" = Motorized Damper OA, Backdraft Damper (with no Bypass) Digit 19: Digit 20: Disconnect "N" = Non-Fused (STANDARD) "F" = Fused Digit 21: Unit ontrol Enhancements (see Restriction 6) "T" = Transformer with Isolation Relay (STANDARD) "1" = Enhanced ontrols "2" = Premium ontrols "3" = Enhanced ontrols with BANET License "4" = Premium ontrols with BANET License Digit 22: Filter Options "-" = None "F" = Filter Monitor Both Airstreams Digit 23: "-" = None (Reserved) Digit 24: "-" = None "W" = White Paint "" = ustom Paint "X" = ustom Unit Digit 25: "L" = Listed "N" = Non-Listed Unit ontrol (see Restriction 8) "A" = Standard Unit ontrol Wiring "D" = Independent Blower ontrol "G" = Terminal Strip for E Motors "V" = Onboard VFD Both Airstreams "F" = Onboard VFD Airstream "E" = Onboard VFD Airstream Other Options Paint and ustomization Safety Listing (see Restriction 5) *NOTES: Digit 6 "J" = G5 ore Type Digits 10, 16 and 17 are not used in these models. *Digit 18: Flow ontrol: odes for Bypass: Face damper also acts as Isolation damper in or Airstream. Restrictions: 1: Voltage odes "1" & "9" only available with Phase ode "1" (Single-Phase). 2: Voltage odes "4" & "8" only available with Phase ode "3" (Three-Phase). 3: Motor odes "EE" (E Motors) only available with Phase ode "1" (Single Phase) 4: Unit ontrol ode "G" (Terminal Strip) only available with Motor odes "EE" (E Motors). 5: Some units with Other Options ode "X" are not safety listed. 6: Unit ontrol "A" not available with Unit ontrol Enhancements odes "1", "2", "3" & "4". 7: Voltage ode "9" not available with / Horsepower odes "EE". 8: Unit ontrol odes "V", "E" & "F" not available with Voltage ode "1". NOTE: RenewAire reserves the right to make changes in the design or specifications of products at any time without notice. Unless otherwise specified, dimensions are rounded to the nearest eighth of an inch INSTALLATION, OPETION AND MAINTENANE MANUAL 3

4 HE 1.5XRT Energy Recovery Ventilator Standard ROOFTOP UNIT Download specification at: renewaire.com/specifications SPEIFIATIONS Ventilation Type: Static plate, heat and humidity transfer Typical Airflow Range: 375-1,575 FM AHRI 1060 ertified ore: One L62-G5 and one L125-G5 Standard Features: Non-fused disconnect 24 VA transformer/relay package Filters: Total qty. 4, M 8: (2) 14" x 20" x 2" and (2) 16" x 20" x 2" Unit Dimensions & Weight: 86" L x 33 1/4" W x 56 3/4" H lbs., varies by option(s) Max. Shipping Dimensions & Weight (on pallet): 70" L x 47" W x 83" H 615 lbs. Motor(s): Qty. 2, 1.0 HP ea., Direct drive standard motorized impeller packages Options: Qty. 2, E Motor (see HE1.5XRT E Motor submittal) HP 120V/1Ph/60HZ, 1.0 HP V/1Ph/60HZ Integrated programmable controls Fused disconnect Double wall construction Factory supplied and mounted variable frequency drives (VFDs) - one or both airstreams Gravity backdraft dampers lass 1 low leakage motorized isolation dampers -, or both airstreams Qty. 2, Factory mounted filter alarms Independent blower control Exterior paint - white, custom colors Accessories: Filters - M 13, 2" (shipped loose) Backdraft damper - OA or Roof curb - standard 14" urb wind clip Engineered combo curb for arrier RTU Engineered combo curb for Trane RTU Digital time clock - wall mount (T7D-W), in exterior enclosure (T7D-E) Motion occupancy control - ceiling mount (M-), wall mount (M-W) arbon dioxide control - wall mount (O2-W), duct mount (O2-D) Electric duct heater - EK series (1 60 kw); designed for indoor ductwork installation only Indirect gas-fired duct furnace - GH series ( MBH), installed downstream of any fans AIRFLOW PERFORMANE Motor HP Phase 1.0 Single Phase External Static Pressure (Inches Water olumn) ,535 FM 1,540 Watts 1390 FM 1515 Watts 1255 FM 1485 Watts 1120 FM 1445 Watts 970 FM 1395 Watts 815 FM 1310 Watts 640 FM 1195 Watts 1.0 Three Phase 1,630 FM 1,440 Watts 1485 FM 1435 Watts 1335 FM 1415 Watts 1170 FM 1375 Watts 995 FM 1325 Watts 810 FM 1260 Watts 615 FM 1180 Watts Note: Watts is for the entire unit (2 motors). Note: Airflow performance includes effect of clean, standard filter supplied with unit. ELETRIAL DATA HP Volts HZ Phase Standard Electrical Specifications FLA per motor Min. ir. Amps Max. Overcurrent Protection Device Single Single Single Optional Factory Installed VFD Electrical Specifications FLA per motor Min. ir. Amps Max. Overcurrent Protection Device Three Three Specifications may be subject to change without notice. ORE PERFORMANE Effectiveness (%) ,200 1,500 90% 70% 50% 30% Airflow (FM) At AHRI 1060 standard conditions. See all AHRI certified ratings at INSTALLATION, OPETION AND MAINTENANE MANUAL

5 HE1.5XRT HE1.5XRT INFO The HE1.5XRT is available from the factory in four different configurations to meet different connection requirements: ONFIGUTIONS OPTION ODE HE1.5XRTV HE1.5XRTR HE1.5XRTF HE1.5XRTH DESRIPTION OF DUT ONNETION ONFIGUTION Room Air [] enters bottom of unit. Fresh Air [] exits bottom of unit. Room Air [] enters bottom of unit. Fresh Air [] exits side of unit. Room Air [] enters side of unit. Fresh Air [] exits bottom of unit. Room Air [] enters side of unit. Fresh Air [] exits side of unit. MOUNTING OPTION Roof urb Roof urb Roof urb Equipment Rail STANDARD ONFIGUTION = Room Air into Unit OA = Outside Air into Unit = Fresh Air to Inside = Exhaust Air to Outside HE1.5XRTV HE1.5XRTR RTV RTR OA OA HE1.5XRTF HE1.5XRTH RTF RTH OA OA INSTALLATION, OPETION AND MAINTENANE MANUAL 5

6 OA OA Damper Location (Optional) (RTR) 18" X 18" Duct Receiving Flange 5" Damper Frames Typ. E-Box Disconnect Switch 86" Overall 42 7/8" Lift Lugs OA RTR ONLY 22 1/8" Wiring 56 3/4" Overall 3 5/8" L 5 5/8" Power In L 2 1/2" ontrol In (2) 7/8" holes for wiring in bottom of E-Box RTV ONLY FRONT VIEW Pressure Ports (4) Typ. 5 7/8" 54" ase L 26 1/8" Wiring LEFT VIEW (RTR) Damper Location (Optional) 33 1/4" Overall 29 3/4" Lift Lugs RIGHT VIEW 1 7/8" HE1.5XRT (RTV/RTR) Energy Recovery Ventilator Standard or E Motor Option 1 1/8" 45 3/4" ase 32 1/4" 11 1/8" Opening 14" x 16" 2 1/8" 4 1/4" URB 1.5X 17 1/8" I.D. 17 1/8" I.D. 32 5/8" ase 15 3/8" (RTV) 14" x 16" Opening 38 1/2" I.D. 10 1/8" 24 3/4" Minimum Service Area 42 1/4" O.D. (RTV) Damper Location (Optional) Door Swing Door Swing 1 7/8" 24 1/2" I.D. 28 1/4" O.D. A A TOP VIEW URB ROSS-SETION A-A (TYP.) 1 1/2" X 1/4" Neoprene Gasket 1 7/8" 55 5/8" Minimum Service Area TOP VIEW 3/4" X 3 1/2" Wooden Nailer 3" SETION A-A AIRFLOW ONFIGUTION Available as shown: RTV RTR ABBREVIATIONS : Exhaust Air to outside OA: Outside Air intake : Room Air to be exhausted : Fresh Air to inside RTV: Rooftop Vertical & RTR: Rooftop Vertical Only INSTALLATION ORIENTATION Unit must be installed in orientation shown. NOTE: 1. UNLESS OTHERWISE SPEIFIED, DIMENSIONS ARE ROUNDED TO THE NREST EIGHTH OF AN INH. 2. SPEIFIATIONS MAY BE SUBJET TO HANGE WITHOUT NOTIE. UNIT MOUNTING & APPLIATION Must be mounted as shown. Airstreams can not be switched. Duct configuration is field convertible INSTALLATION, OPETION AND MAINTENANE MANUAL

7 OA OA SPEIFIATIONS & DIMENSIONS Damper Location (Optional) (RTH) 18" X 18" Duct Receiving Flange E-Box Disconnect Switch 86" Overall 42 7/8" Lift Lugs OA RTH ONLY 22 1/8" Wiring 56 3/4" Overall 3 5/8" L 5 5/8" Power In L 2 1/2" ontrol In (2) 7/8" holes for wiring in bottom of E-Box RTF ONLY FRONT VIEW Pressure Ports (4) Typ. 5 7/8" 54" ase 6" L 26 1/8" Wiring LEFT VIEW (RTH) Damper Location (Optional) 33 1/4" Overall 29 3/4" Lift Lugs 18" X 18" Duct Receiving Flange 6 3/8" RIGHT VIEW 1 7/8" HE1.5XRT (RTH/RTF) Energy Recovery Ventilator Standard or E Motor Option 1 1/8" 45 3/4" ase 2 1/8" URB 1.5X 4 1/4" 11 1/8" 17 1/8" I.D. 17 1/8" I.D. 32 5/8" ase 15 3/8" (RTF) 14" x 16" Opening 38 1/2" I.D. 10 1/8" 24 3/4" Minimum Service Area 42 1/4" O.D. (RTF) Damper Location (Optional) Door Swing Door Swing 1 7/8" 24 1/2" I.D. 28 1/4" O.D. A A TOP VIEW URB ROSS-SETION A-A (TYP.) 1 1/2" X 1/4" Neoprene Gasket 1 7/8" 55 5/8" Minimum Service Area TOP VIEW 3/4" X 3 1/2" Wooden Nailer 3" SETION A-A AIRFLOW ONFIGUTION Available as shown: RTH RTF ABBREVIATIONS : Exhaust Air to outside OA: Outside Air intake : Room Air to be exhausted : Fresh Air to inside RTF: Rooftop Vertical Only RTH: Rooftop Horizontal & INSTALLATION ORIENTATION Unit must be installed in orientation shown. NOTE: 1. UNLESS OTHERWISE SPEIFIED, DIMENSIONS ARE ROUNDED TO THE NREST EIGHTH OF AN INH. 2. SPEIFIATIONS MAY BE SUBJET TO HANGE WITHOUT NOTIE. UNIT MOUNTING & APPLIATION Must be mounted as shown. Airstreams can not be switched. Duct configuration is field convertible INSTALLATION, OPETION AND MAINTENANE MANUAL 7

8 HE1.5XRT INSTALLATION PLANNING YOUR INSTALLATION PLAEMENT OF THE HE1.5XRT The HE1.5XRT is designed for installation on a roof or other outside location. Select a location that is central to the inside duct runs, and close to any other air handler that might be part of the system. F1 2 1/8" 1 1/8" 12" 45 3/4" ase 33 1/4" (RTV, RTR) Opening 14" X 14" 32 5/8" ase 15 3/8" 10 1/8" (RTV, RTF) Opening 14" X 14" Door Swing Door Swing 24 3/4" Minimum Service Area 55 5/8" Minimum Service Area TOP VIEW It is the installer s responsibility to make sure that the screws or bolts used for securing the units are properly selected for the loads and substrates involved. Secure the HE1.5XRT so that it cannot fall or tip in the event of accident, structural failure or earthquake. See Rigging Information for unit weight. RenewAire strongly recommends that you secure rooftop units properly to the building structure. Provide service access to the unit to allow for cleaning the core and filter. Strong winds, tornados, and hurricanes can and do displace or remove rooftop equipment from rails or curbs. When this happens, the equipment, adjacent roof structure, and even vehicles parked near the building can be damaged, and rain typically enters the building. The equipment is put out of service and the collateral damage can be very expensive. Provide Adequate Service Access for Maintenance. The HE1.5XRT will require regular filter and core inspections. Install the HE1.5XRT where you can open the doors for cleaning the core and replacing the filters, and where you can get at the wiring for installation and service. Observe all safety precautions when working on roofs, including locating the unit away from roof edges, provision of safety railings and use of fall protection equipment. 8 INSTALLATION, OPETION AND MAINTENANE MANUAL

9 HE1.5XRT INSTALLATION There are pairs of rigging holes at each upper corner of the unit. Use slings or shackles at all four corners. Spreader bars are recommended in order to avoid damage to the unit. RIGGING INFORMATION F2 LR 40 1/8" RR 25 7/8" UNIT OG LF RF VIEWED FROM TOP OF UNIT HE1.5XRT UNIT ORNER WEIGHTS (LBS) SINGLE-WALL PHASE UNIT LF LR RR RF URB SPEIFIATIONS 1-PHASE & 3-PHASE DOUBLE-WALL PHASE UNIT LF LR RR RF 1-PHASE & 3-PHASE ±INDIATES LOATIONS AT WHIH ORNER WEIGHTS ARE ALULATED ALONG ENTERS OF URB ILS. F3 4 1/4" 17 1/8" I.D. 17 1/8" I.D. URB ROSS-SETION A-A (TYP.) 24 1/2" I.D. A A 28 1/4" O.D. 1 1/2" X 1/4" Neoprene Gasket 3/4" X 3 1/2" Wooden Nailer 1 7/8" 1 7/8" 38 1/2" I.D. 42 1/4" O.D. TOP VIEW 3" SETION A-A INSTALLATION, OPETION AND MAINTENANE MANUAL 9

10 HE1.5XRT INSTALLATION PLANNING YOUR INSTALLATION To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc., out of unit. 1. Before servicing or cleaning the unit, switch power off at disconnect switch or service panel and lockout/tag-out to prevent power from being switched on accidentally. More than one disconnect switch may be required to de-energize the equipment for servicing. 2. This installation manual shows the suggested installation method. Additional measures may be required by local codes and standards. 3. Installation work and electrical wiring must be done by qualified professional(s) in accordance with all applicable codes, standards and licensing requirements. 4. Any structural alterations necessary for installation must comply with all applicable building, health, and safety code requirements. 5. This unit must be grounded. 6. Danger of severe injury to bystanders and damage to unit or property if high winds move this unit. Secure this unit to the building! 7. Sufficient air is needed for proper combustion RISK OF FIRE, ELETRI SHOK, OR INJURY. OBSE ALL ODES AND THE FOLLOWING: and exhausting of gases through the flue (chimney) of fuel burning equipment that might be installed in the area affected by this equipment. If this unit is exhausting air from a space in which chimney-vented fuel burning equipment is located, take steps to assure that combustion air supply is not affected. Follow the heating equipment manufacturer s requirements and the combustion air supply requirements of applicable codes and standards. 8. Use the unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer. 9. This unit is intended for general ventilating only. Do not use to exhaust hazardous or explosive materials and vapors. Do not connect this unit to range hoods, fume hoods or collection systems for toxics. 10. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities. SOUND ATTENUATION GENEL PTIES Take these simple steps to attenuate noise from the unit. Outside the building: The intake (OA) hood is the primary source of noise outside the building. When practical, orient the outake air hood to point away from houses or public areas. At the urb: ut the holes in the roof deck to fit closely around the duct(s) passing through the roof deck. Seal all gaps around the duct(s) at the roof deck. Ducts: Make sure the ductwork at the unit outlets is stiff enough to resist the flexure and resulting booming associated with system start-up and shut-off. In general, provide smooth transitions from the s outlets to the duct. The ducts connecting to the outlets should be straight for a sufficient distance, with gradual transitions to the final duct size. These guidelines are consistent with SMANA recommended duct layout practices for efficient and quiet air movement. Follow SMANA guidelines. DIATED NOISE The HE1.5XRT is insulated with high-density fiberglass. This provides significant attenuation of radiated sound from the unit itself. The connector duct can be significant sources of radiated sound as well. The duct should be insulated for sound control. This insulation should start at the unit. At a minimum the first ten feet of duct should be insulated. All parts of the and ducts located in a mechanical space with noisegenerating equipment also should be insulated for sound control, both to minimize sound radiation out of the duct, and also to control sound radiation into both ducts INSTALLATION, OPETION AND MAINTENANE MANUAL

11 HE1.5XRT INSTALLATION FIELD ONVERSION OF OPENINGS The HE1.5-RT is designed to allow field conversion of the Return Air () and Fresh Air () unit openings. This means the motorized impeller subassembly can be moved to an adjacent side or base of the unit if that opening is preferred. The outlet opening can also be moved to an adjacent wall or base. Before you start, plan the duct work layout. Determine which openings are to be converted. - Turn off the disconnect switch on the unit. Make sure electrical power is shut off to the unit and disconnect switch. - Open the access doors to the unit. - Remove the core strap, filters, and energy exchanger cores from the unit. FIELD ONVERSION TO FIELD ONVERT INLET OPENING 1. Disconnect motor harness connector by the motor. Move the wire harness out of the way if necessary. 2. Support the impeller subassembly. Remove the eight ¼-20 bolts retaining the impeller subassembly plate to the side rails and front and back tabs. 3. Lift the entire impeller subassembly out of the unit and set aside. Leave the rails in the unit. 4. Remove the patch pan from the desired opening. Note: The patch pan may be on the underside of the base pan. Safely access the underside of the unit to remove the patch pan. 5. Using the exposed sheet metal cutout, cut the insulation from the desired opening. 6. Seal the edges of the cut insulation to prevent erosion of the insulation edges and having debris in the air stream. 7. Install the patch pan over the undesired opening. Note: The patch pan may be installed on the underside of the base pan. Safely access the underside of the unit to install the patch pan. 8. Install the insulation in the undesired opening. Seal the insulation. 9. At this point, if the Fresh Air () outlet opening is to be converted, you will want to address it before proceeding with the inlet opening. 10. After converting the outlet opening proceed with the inlet opening. 11. Install the impeller subassembly into the new inlet opening and fasten with eight ¼-20 bolts to retain to the side rails and front and back tabs. Make sure the motor harness connector is towards the front of the unit. 12. onnect the motor harness. 13. Tidy up any wire harnesses that were moved making sure motor wires are taut and away from the impeller blades. TO FIELD ONVERT OUTLET OPENING 1. Remove the patch pan from the desired opening. Note: The patch pan may be on the underside of the base pan. Safely access the underside of the unit to remove the patch pan. 2. Using the exposed sheet metal cutout, cut the insulation from the desired opening. 3. Seal the edges of the cut insulation to prevent erosion of the insulation edges and having debris in the air stream. 4. Install the patch pan over the undesired opening. Note: The patch pan may be installed on the underside of the base pan. Safely access the underside of the unit to install the patch pan. 5. Install the insulation in the undesired opening. Seal the insulation. 6. If the Inlet Opening is being converted return to Step 10 in the To Field onvert Return Air () Inlet Opening instructions. After completion of the field conversion, - lean out the interior of the unit to remove any debris. - Install energy exchanger cores, filters, and core strap INSTALLATION, OPETION AND MAINTENANE MANUAL 11

12 HE1.5XRT INSTALLATION PLANNING YOUR INSTALLATION ONNETING HORIZONATAL DUTS TO UNIT Flanged duct connections are provided on the horizontal duct connections of the HE1.5XRTR, RTF, and RTH units. These allow for connection of ducts. Please refer to dimension drawings for duct flange sizes. The unit s fresh air inlet should be at least 10 away from any exhaust, such as dryer vents, chimneys, furnace and water heater exhausts, or other sources of contamination or carbon monoxide. Do not locate the fresh air inlet where vehicles may be serviced or left idling. Never locate the unit inside a structure. Danger of damage or severe injury if high winds move this unit. Secure unit to structure. Observe local code requirements at a minimum. INSIDE DUTWORK SYSTEM Follow Engineer s Ductwork Design Ductwork should be designed by an engineer to allow the unit to provide the required airflow. Duct Insulation If the inside ducts run through un-conditioned spaces, they must be insulated, with a sealed vapor barrier on both inside and outside of insulation. Use Dampers to Set and Balance Airflow Rates In most applications, the airflow rate for both the Fresh Air and the Exhaust Air should be roughly equal (or balanced ) for best performance of the HE1.5XRT Unit. See unit specification sheet for FM/ESP curves for available horsepower motors. APPLIATIONS See figure F4 for examples of some common installation approaches. F4 ommon Installation Approaches AHU AHU ONDITIONED SPAE 12 INSTALLATION, OPETION AND MAINTENANE MANUAL

13 HE1.5XRT INSTALLATION BASI REQUIREMENTS Always connect an and an duct to each Rooftop unit. With Rooftop units, the and ducts cannot be interchanged. With RTV units, both ducts are inside the building. In other units, such as the RTR/RTF and RTH, at least one of the ducts is outside and must be weatherized. Any weatherized duct must be thermally insulated to prevent condensation on the inside or outside of the duct. The duct lining must be vapor-sealed, and the duct exterior must be rain tight. Duct(s) connected to the bottom of the HE1.5XRT are generally installed at this time. Install (2) ducts with HE1.5XRTV, (1) duct with HE1.5XRTR or RTF. Drop duct(s) into openings in top of roof curb. Install appropriate gasket on top of Roof urb and edges of ducts. Tape both inner and outer vapor barriers of insulated duct to collars on duct adapters. This is critical to prevent migration of moisture into insulation. Buildup of moisture can result in failure of the duct system and/or frost in the insulation. Make sure any tears in the inner and outer vapor barriers are sealed. DUTING MOUNTING THE UNIT - ON ROOF URBS The base of the HE1.5XRT is designed for installation on typical Roof urbs that come with 1½ wide wood nailers on the top edge. See figure 3 in Planning Your Installation for appropriate curb size. Set HE1.5XRT in place. We recommend bolting through sides of unit base into the Roof urb to secure the unit against high winds. ON EQUIPMENT ILS (HE1.5XRTH ONLY) Review drawing of Roof urb and specify Equipment Rail to fit. Before installing HE1.5XRT, apply roofing and counterflashing to Equipment Rails as per standard practice. Set HE1.5XRT in place. We recommend bolting through sides of unit base into the Equipment Rails to secure the unit against high winds. OPTIONAL URB LIPS If the optional curb clip kit is supplied, the clips must be installed on the curb before installing the unit. Refer to instructions supplied with the urb lip Kit. ELETRIAL SPEIFIATIONS NOTE: If your unit is equipped with EM Motors, please refer to EM Motor Manual Supplement for more detail. Electrical Options and Ratings are identified on the Unit Label (located near electrical box). Find the complete Unit Model Number in the lower left corner of the Unit Label. Before bringing power to the unit check unit nameplate to confirm it matches the voltage and phase of the power you are supplying. Remember that your field connections need to be accessible for inspection. INSTALLATION INSTRUTIONS Do Not Use Variable Speed ontrols Blower motors in the HE1.5XRT will be damaged by speed control devices. Use balancing dampers in ductwork to set or control operating air flow rates. EM motors or variable frequency drives are available as an option for speed control INSTALLATION, OPETION AND MAINTENANE MANUAL 13

14 HE1.5XRT INSTALLATION WIRING SHEMATIS HE1.5XRT P1 WIRING SHEMATIS - STANDARD NOTE: Schematics shown are representative of standard units. See Unit Schematic label for detailed information. POWER SUPPLY - 60 Hz SEE UNIT TING LABEL FOR PHASE, VOLTAGE, MA AND MOPD. L2 OMITTED WITH SINGLE-PHASE POWER SUPPLY. GND UNIT DISONNET L1 T1 L2 T2 L3 T3 FUSES (opt.) This wire omitted with single-phase power supply. ONTATOR 1L1 2T1 3L2 4T2 5L3 6T3 A2 A1 MOTOR These wires omitted with single-phase power supply. DO NOT interconnect this unit's lass 2 Power Supply with an External Power Supply. TNSFORMER with ircuit Breaker DOOR INTERLOK SWITH MOTOR "UNIT ONTROL USING LASS II POWER PROVIDED BY THIS UNIT" POWER AVAILABLE AT TERMINALS 1 & 2 INSTALL PROVIDED JUMPER BETWEEN TERMINALS 2 & 3 JUMPER all for Unit Operation NOT AVAILABLE IN EVERY UNIT "UNIT ONTROL USING LASS II POWER FROM ANOTHER POWER SOURE" POWER AVAILABLE AT TERMINALS 1 & 2 DO NOT INSTALL JUMPER BETWEEN TERMINALS 2 & 3 OUT 1 lass II all for Unit Operation RELAY KEY: "" = Fresh Outside Air Blower "" = Exhaust Air Blower TORY WIRING HIGH-VOLTAGE TORY WIRING FIELD WIRING HIGH-VOLTAGE FIELD WIRING HE1.5XRT P3 WIRING SHEMATIS - STANDARD POWER SUPPLY - 60 Hz SEE UNIT TING LABEL FOR PHASE, VOLTAGE, MA AND MOPD. UNIT DISONNET L1 T1 L2 T2 L3 T3 FUSES (opt.) ONTATOR 1L1 2T1 3L2 4T2 5L3 6T3 MOTOR GND A2 A1 DO NOT interconnect this unit's lass 2 Power Supply with an External Power Supply. TNSFORMER with ircuit Breaker DOOR INTERLOK SWITH MOTOR THERMAL PROTETOR WIRES MOTOR "UNIT ONTROL USING LASS II POWER PROVIDED BY THIS UNIT" POWER AVAILABLE AT TERMINALS 1 & 2 INSTALL PROVIDED JUMPER BETWEEN TERMINALS 2 & 3 JUMPER all for Unit Operation "UNIT ONTROL USING LASS II POWER FROM ANOTHER POWER SOURE" POWER AVAILABLE AT TERMINALS 1 & 2 DO NOT INSTALL JUMPER BETWEEN TERMINALS 2 & 3 OUT 1 lass II all for Unit Operation RELAY KEY: "" = Fresh Outside Air Blower "" = Exhaust Air Blower TORY WIRING HIGH-VOLTAGE TORY WIRING FIELD WIRING HIGH-VOLTAGE FIELD WIRING 14 INSTALLATION, OPETION AND MAINTENANE MANUAL

15 HE1.5XRT INSTALLATION HE1.5XRT P1 IB SINGLE PHASE UNIT WITH INDEPENDENT BLOWER ONTROL UNIT DISONNET This wire omitted with POWER SUPPLY - 60 Hz FUSES (opt.) single-phase power SEE UNIT TING LABEL L1 T1 supply. FOR PHASE, VOLTAGE, L2 T2 MA AND MOPD. L2 OMITTED WITH SINGLE-PHASE L3 T3 POWER SUPPLY. GND ONTATOR () 1L1 2T1 3L2 4T2 5L3 6T3 A2 A1 MOTOR WIRING SHEMATIS NOTE: Schematics shown are representative of standard units. See Unit Schematic label for detailed information. These wires omitted with single-phase power supply. ONTATOR () DO NOT interconnect this unit's lass 2 Power Supply with an External Power Supply. TNSFORMER with ircuit Breaker DOOR INTERLOK SWITH 1L1 2T1 3L2 4T2 5L3 6T3 A2 A1 MOTOR "UNIT ONTROL USING LASS II POWER PROVIDED BY THIS UNIT" POWER AVAILABLE AT TERMINALS 1 & 2 INSTALL PROVIDED JUMPER BETWEEN TERMINALS 2 & 3 JUMPER all for Blower Operation. all for Blower Operation NOT AVAILABLE IN EVERY UNIT "UNIT ONTROL USING LASS II POWER FROM ANOTHER POWER SOURE" POWER AVAILABLE AT TERMINALS 1 & 2 DO NOT INSTALL JUMPER BETWEEN TERMINALS 2 & 3 OUT lass II all for Blower Operation. all for Blower Operation RELAY () RELAY () KEY: "" = Fresh Outside Air Blower "" = Exhaust Air Blower TORY WIRING HIGH-VOLTAGE TORY WIRING FIELD WIRING HIGH-VOLTAGE FIELD WIRING HE1.5XRT P3 IB THREE PHASE UNIT WITH INDEPENDENT BLOWER ONTROL POWER SUPPLY - 60 Hz SEE UNIT TING LABEL FOR PHASE, VOLTAGE, MA AND MOPD. UNIT DISONNET L1 T1 L2 T2 L3 T3 FUSES (opt.) ONTATOR () 1L1 2T1 3L2 4T2 5L3 6T3 MOTOR GND A2 A1 MOTOR THERMAL PROTETOR WIRES ONTATOR () DO NOT interconnect this unit's lass 2 Power Supply with an External Power Supply. TNSFORMER with ircuit Breaker DOOR INTERLOK SWITH 1L1 2T1 3L2 4T2 5L3 6T3 A2 A1 MOTOR THERMAL PROTETOR WIRES MOTOR "UNIT ONTROL USING LASS II POWER PROVIDED BY THIS UNIT" POWER AVAILABLE AT TERMINALS 1 & 2 INSTALL PROVIDED JUMPER BETWEEN TERMINALS 2 & 3 JUMPER all for Blower Operation. all for Blower Operation "UNIT ONTROL USING LASS II POWER FROM ANOTHER POWER SOURE" POWER AVAILABLE AT TERMINALS 1 & 2 DO NOT INSTALL JUMPER BETWEEN TERMINALS 2 & 3 OUT lass II all for Blower Operation. all for Blower Operation RELAY () RELAY () KEY: "" = Fresh Outside Air Blower "" = Exhaust Air Blower TORY WIRING HIGH-VOLTAGE TORY WIRING FIELD WIRING HIGH-VOLTAGE FIELD WIRING INSTALLATION, OPETION AND MAINTENANE MANUAL 15

16 HE1.5XRT INSTALLATION INSTALLATION INSTRUTION LOW VOLTAGE ONTROL SYSTEM This is provided with a lass II power supply system that operates the unit s contactor(s) for HE1.5XRT. The s Power Supply can also be used to power the externally-installed controls system: up to 8VA of power is available. The unit s power supply system includes isolation relay(s) so you can use external controls whose contact ratings are as low as 50mA (1.2VA). Also, it is possible to operate the isolation relays with power from an external source (with proper wiring connections). A built-in circuit-breaker prevents damage to the transformer and other low-voltage components in the event of a short-circuit or overload. In extreme cases, the transformer itself is designed to fail safely. SPEIFIATIONS Nominal Output Voltage under load: Typical Output Voltage at no load: 29-31V Minimum contact rating for connected control device: (50mA (1.2VA) ircuit Breaker Trip Point: 3A If primary-side voltage is 230VA, move black primary-side lead from transformer s 208V terminal to the transformer s terminal marked 240V ( 230V in some units). Do not move the black primaryside lead that is connected to the transformer s OM terminal. 1. onnect only to components intended for use with power. 2. Do not undersize the low-voltage wires connected to this device. Observe the wire length and gauge limits indicated in this manual. 3. Do not overload this unit s power supply system. onfirm that the power requirements of devices you connect to this power supply system do not exceed 8VA in total. 4. If an external source of power is used to control the unit, consult the wiring schematics and connect the external power only to the specified terminals in order to avoid damaging the unit or external controls. onnect only LASS II power to the control terminals of this unit. 5. Unit is not equipped to receive analog signals (such as 1-10vdc or 4-20mA). 6. Unit is not equipped to communicate directly with Building Management Systems (such as BANET, LONWORKS, etc.). However, the unit can be controlled by powered or non-powered contacts operated by any kind of control system. DANGER OF INJURY OR DAMAGE. The motors in this unit must not be run at an amperage that exceeds the motor s rated full load amps. It is the installer s responsibility to measure the operating amperage of each motor. If the full load amp rating is exceeded, the amp draw must be reduced by reducing airflow with an external damper. Failure to make this adjustment may result in unsafe motor winding temperatures or tripping of the motor thermal protection. HOW TO RESET THE IRUIT BRKER If the transformer is subjected to an excessive load or a short circuit, the circuit breaker will trip to prevent the failure of the transformer. When it trips the circuit breaker s button pops up. Shut off the primary-side power to the unit, and remove the excessive load or the short. The circuit breaker can be reset about fifteen seconds after it trips by pressing in the button. Limits of Power Output If limits on wire gauge and length are observed, you may connect control devices that draw up to 8VA to the blue and red wires. More than one device can be connected as long as total steadystate load does not exceed 8VA. OBSE THESE LIMITS TO WIRE LENGTH AND GAUGE in order to ensure reliable operation of the control system. Wire Gauge #22 #20 #18 #16 #14 #12 ircuit Length ircuit Length is distance from to ontrol Device INSTALLATION, OPETION AND MAINTENANE MANUAL

17 HE1.5XRT INSTALLATION NOTE: The simplified schematics below show only the relevant portions of the low-voltage control circuit in the unit and representational external control approaches. See the complete unit schematics elsewhere in this manual. Be careful if the external control system provides power at its control output: make sure blue and red leads are separately capped and not connected to any other wires. ONTROL WIRING SHEMATIS ONTROL WIRING EXAMPLES BY TYPE OF APPLIATION A. Single 2-wire ontrol: Use this schematic if the control requires no power to operate and acts like a simple on/off switch. The control must not supply any power to the unit. Install jumper (provided) between terminals 2 & 3. onnect the control s contacts to terminals 1 & 4 to operate the s isolation relay. ontrol on separate Power Supply, no power present at ontrol Output: Wire as shown for the Single 2-wire control. A A SWITH OR NON-POWERED ONTROL USING UNIT S POWER SUPPLY Make sure the control provides no voltage or current at its output terminals. B. ontrol Sending On Signal (from an external power source) to : Make sure jumper is NOT installed between Terminals 2 & 3. Now you can safely apply to the Terminals 3 & 4 to operate the s isolation relay. B FROM AN EXTERNAL SOURE Supply only (not VD) from a lass II Power Source.. ontrol System with 2 Non-powered Relay ontacts: s with Independent Blower ontrol Only: Use this schematic if the external control system provides no voltage or current at its output contacts. Install jumper (provided) between terminals 2 & 3. onnect one side of each of the output contacts to Terminal 1. onnect the other side of the output contacts to the appropriate yellow leads: Terminal 4 for the Blower, and Terminal 5 for the Blower. A SWITH OR NON-POWERED ONTROL USING UNIT S POWER SUPPLY INSTALLATION, OPETION AND MAINTENANE MANUAL 17

18 HE1.5XRT INSTALLATION ONTROL WIRING SHEMATIS D. ontrol System Sending two On Signals (from an external power source): s with Independent Blower ontrol Only: Make sure the jumper is NOT installed between Terminals 2 & 3. Now you can safely apply one of the signals to Terminals 3 & 4 to operate the s isolation relay for the Fresh Air Blower. Apply the second signal to Terminals 3 & 5 to operate the s isolation relay for the Exhaust Blower (make sure the polarity of each wire connected to Terminal 3 is the same). Supply only (not VD) from a lass II Power Source. D TWO EXTERNAL RELAY ONTATS SUPPLYING FROM AN EXTERNAL SOURE E. ontrol operating on Unit s Power Supply: power is available at the Terminals 1 & 2. : external control system should not draw more than 8VA. Install jumper (provided) between terminals 2 & 3. onnect the switched output of the ontrol to Terminal 4 to operate the s isolation relay. E AN EXTERNAL ONTROL USING UNITS POWER SUPPLY F. ontrol on separate Power Supply: Use this schematic only if no power is present at the controls output terminals. Install jumper at terminals 2 & 3. onnect the ontrol s Normally Open (N.O.) contacts to terminals 1 & 4. NOTE: See Wiring Schematics. G. ontrol System on separate Power Supply; Independent Blower ontrol: Use this schematic only if no power is present at the controls output terminals. Install jumper at terminals 2 & 3. onnect one of the ontrol s (N.O.) contacts to terminals 1 & 4 to operate the s isolation relay for the Outside Air (OA) Blower. onnect another of the ontrol s (N.O.) contacts to terminals 1 & 5 to operate the isolation relay for the Exhaust Air () Blower. NOTE: See Wiring Schematics. H. ontrol System Operating Isolation Dampers with End Switches: Use Isolation Dampers with electrically separate end switches. The end switches are used to separately control the unit s Isolation Relays. Also, specify the with Independent Blower ontrol. This ensures that each damper is open before the respective blower starts up. NOTE: Because the s contact will only be operating once the Dampers are open, the power draw of the Damper Actuators is allowed to be as much as 35VA while opening (including power draw of the external control system, if any). However, the power draw of the fully-opened (stalled) Actuators (and external control system if any) must be less than 8VA INSTALLATION, OPETION AND MAINTENANE MANUAL

19 HE1.5XRT INSTALLATION PRINIPAL OF OPETION The HE1.5XRT has one basic purpose: to exhaust air from a structure and bring in fresh air from outside, while transferring heating or cooling energy from the exhaust air to the fresh air. The HE1.5XRT is a very simple device, and will accomplish this purpose as long as the blowers for both airstreams are able to move air through the energy-exchange core. OPETION HEKING THAT UNIT IS OPETING Air Flow Airflow should be occurring in both airstreams. Sometimes the easiest place to confirm that air is moving is at the weatherhoods. If exact airflow is critical, it may be desirable to permanently install flow measuring stations and manometers in the ductwork connected to the unit. These also can be used to determine when filters should be cleaned or changed. Use Static Taps in Doors to Measure Airflow Rates See ross-ore Static Drop in MSURING AIRFLOW table. These may be used to directly measure airflow in the unit. Energy Exchange Precise determination of installed sensible energy exchange effectiveness requires careful measurement of temperatures and air flows in all four air streams, and in practice is somewhat difficult. ONTINUOUS OPETION ontinuous operation is acceptable in virtually all conditions. Unit will not be damaged by continuous operation as long as air flow occurs. Blower motors may overheat if filters become completely blocked due to lack of maintenance. Motors are thermally protected. With continuous operation, some external frosting may occur in very cold weather. It is possible to confirm that energy is being exchanged simply by feeling the ducts. If the Fresh Air duct from the unit into the room is closer to room temperature than to the outside temperature, energy is being recovered. Operating ontrols A wide variety of control schemes may be selected by the engineer, installer, or owner to meet the ventilation needs of the facility. These may include timer clocks, occupancy sensors, dehumidistats (for cool-weather operation), carbon dioxide sensors, and others. DD systems may also control the unit. Most control schemes will operate the unit only when needed. OPETION IN EXTREME OLD WTHER Unit is capable of operating at outside temperatures down to -10 F, with indoor humidities below 40%, without any internal frosting. Unit can operate at more severe conditions occasionally with little or no impact on its performance. At lower humidities, it can operate at lower outside temperatures without freezing the energy-exchange core. Standard HE1.5XRT with single phase original equipment motors are NOT suitable for use with solid state speed control. Three phase motors are NOT suitable for use with solid state speed control. If speed control is desired use the VFD option. Single phase EM motors are NOT suitable for use with solid state speed control. They already have speed control built into the motor electronics. Le HE1.5XRT avec moteurs d équipement d origine monophasés ne convient pas pour une utilisation avec regulateur de vitesse electronique. Moteurs de trois phase ne convient pas pour utilisation avec regulateur de vitesse electronique. Si la régulation de vitesse est souhaité, utiliser l option VDF. Moteurs d une phase de l EM ne conviennent pas pour une utilisation avec regulateur de vitesse electronique. Ils ont déjà le contrôle de vitesse intégré dans le moteur électronique INSTALLATION, OPETION AND MAINTENANE MANUAL 19

20 HE1.5XRT START-UP START-UP EQUIPMENT REQUIRED A magnehelic gauge or other device capable of measuring 0 to 1.5 in. water of differential pressure. 2 pieces of natural rubber latex tubing, 1/8 ID, 1/16 Wall works the best. NOTE: Be sure to remove cap from pressure port before inserting tubing. Insure tubing is well seated in pressure ports. NOTE: The tubing should extend in the pressure port approx. 1 inch. The proper operating airflow range for this model is FM. ROSS ORE STATI PRESSURE MSUREMENT INSTRUTIONS The individual differential static pressures (DSP) can be measured using the installed pressure ports located in the front of the units core access doors. NOTE: These ports have been carefully located on the unit as to give you the most accurate airflow measurement. Do not relocate pressure ports. To read SFM of Fresh Air () install the high pressure side (+) of your measuring device to the Outside Air (OA) port and the low pressure side (-) to the Fresh Air () port. To read SFM of Room Air () install the high pressure side (+) of your measuring device to the Room Air () port and the low pressure side (-) to the Exhaust Air () port. Use the reading displayed on your measurement device to cross reference the FM output using the conversion chart. NOTE: Be sure to replace cap into pressure port when air flow measuring is completed. DIFFERENTIAL STATI AROSS ORE DSP VS. FM HE1.5XRT DSP Fresh Air () FM Room Air () FM NOTE: Pressure drop of clean 2 M-8 Filters is included in the Unit Performance Ratings Table. F1 MSURING AIRFLOW Pressure Taps (4) OA RTH, RTR ONLY RTV, RTF ONLY RTV, RTF ONLY RTV, RTR ONLY 20 INSTALLATION, OPETION AND MAINTENANE MANUAL

21 HE1.5XRT START-UP FILTER SPEIFIATIONS (2) 14 x 20 x 2 and (2) 16 x 20 x 2 (nominal) pleated filters. Actual size: 13.5 x 19.5 x 1.75 and 15.5 x 19.5 x Optionally (4) 15 x 20 x 2 (nominal) pleated filters can be used. Actual size: 14.5 x 19.5 x 1.75 Unit shipped with M-8 Filters. Minimum recommended effectiveness: M-6 START-UP INITIAL PRESSURE DROP OF M 8 FILTERS SUPPLIED WITH THIS UNIT lean-filter Pressure Drop (in.w.g.) Unit Airflow (FM) NOTE: clean filter pressure drop is included in unit airflow performance tables. INITIAL PRESSURE DROP OF M13 FILTERS AVAILABLE AS AN OPTION. lean-filter Pressure Drop (in.w.g.) Unit Airflow (FM) NOTE: pressure drop of standard filter is included in unit airflow performance tables INSTALLATION, OPETION AND MAINTENANE MANUAL 21

22 HE1.5XRT MAINTENANE SIE PARTS HE1.5XRT 22 INSTALLATION, OPETION AND MAINTENANE MANUAL

23 HE1.5XRT MAINTENANE Danger of Electrical Shock when servicing an installed unit. ALWAYS DISONNET POWER SOURE BEFORE SIING! More than one disconnect switch may be required. Proper Wiring Size Selection and Wiring Installation are the Responsibility of the Electrical ontractor. REQUIREMENTS Keep your performing at its best by cleaning it as described below: TO LN THE ENERGY EXHANGE ELEMENT Vacuum the face of the energy exchange element yearly. Dust collects only on the entering face of the energy exchange element, right where the filter sits. The interior of the energy exchange element stays clean even if the element faces are dust covered. 1. Remove the filters (see below) 2. Vacuum the exposed faces of the energy exchange element with a soft brush attachment 3. Vacuum out dust from the rest of the unit case 4. Install new filters DO NOT WASH THE ENERGY EXHANGE ORE. Keep it away from water or fire to avoid damaging it. Always handle the core carefully. INSPET AND HANGE THE FILTERS REGULARLY. Inspect and/or replace filters every two or three months when the HE1.5XRT is in regular use, or as needed. Filters must be used or the energy exchange core will become blocked by dust and the unit will not do its job. In extreme cases components may be damaged. 1. To access the filters unlatch the access door. 2. Pull the dirty filters out and replace with new filters. NOTE: The filters supplied in the unit are usually able to keep the energy exchange core clear for several months. Finer filters can be used but must be cleaned more often. If using finer filters, their increased resistance to flow must be allowed for in the system design. MOTOR MAINTENANE The motor needs no lubrication. If necessary vacuum clean the blower wheels at the same time you clean the face of the energy exchange element (annually). Danger of injury if unit starts unexpectedly. Switch power off at service disconnect. Lock-out/ tag-out the disconnect. RISK OF INJURY OR DAMAGE. Motor has an automatic reset thermal protector. Disconnect power before servicing or resetting motor thermal protector. Use caution, motor may be hot. The motor must cool before it resets the thermal protector. If the motor thermal protector tripped, correct the issue that caused the motor to overheat (e.g. over motor rated amperage or locked rotor) INSTALLATION, OPETION AND MAINTENANE MANUAL 23

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